Anyone interested in 3k gov. springs

[Jim Avery]

count me in

 

[BushWakr - RIP]

Guys, as I surf around looking for things for our site/trucks, I come across lots of stuff that may have potential for us. When I find something, I try to decide if it applies, or may have use in our application. Then, I usually ask permission to reprint or copy/paste to our Forum. I've never been refused consent so far, which says a whole lot about the CTD group.



Ok, first the credit does go to fellow CTD'rs who have done this mod. I first noticed a few fellows on the other site, Diesel Truck Resource, who have had success with it. In fact guys, the moderator over there has been really great about allowing me to share with you, some of the post info and tips they discover. Thanks to OkieBronkRider, Old Smokey and others for the great spirit and sharing of info they have shown.

I have made a number of inquiries about this mod, both to some who have done it and to some who have used this mod in their businesses.

The high idle screw will allow you to increase your top end RPM on the pump, but it does not allow a proper increase in the defuel point which should correspond to the higher idle. You do have a slightly higher defuel, but not in proper ratio, as I am led to understand.



The gov spring we're looking at extends the RPM and correspondingly correct defuel to abut 3000RPM. Your defuel may a touch lower than that, but it will be correctly related to that higher RPM, were the high idle screw runs the WOT RPM up and the defuel does not follow along quite right.

Again, that is my understanding of it, and I'd appreciate anyone who can describe it more correctly if I'm off the mark.

Lastly, I wanted to try it before suggesting this to everyone. I do not want to waster your time, money and expectations to find it's too much work/$$ for the effort if the high idle screw is darn near the same affect.



One more thing, I am NOT going into business, marketing, or anything that even remotely resembles this. All I want to do is find ideas/things that work well, try them, and then offer to take the rest of you along for the ride if you're inclined to try it. I'd really like to see the entire 1st gen group/family have some nice sleepers that surprise the heck outta people.

I may find that I need to move this thread if the guidelines require it. Since this is not related to any vendor, promotion, or sales I think it can stay here, but keep your eyes peeled just in case it is moved.



Bob.

 

[BushWakr - RIP]

:-laf :-laf Deo... . you got sand buddy, you got sand... .



I forgot to answer your quetion(s)



The process requires the throttle lever linkage be removed (care needs to be used to properly index it for re-install), then you remove the 3 (?) screw that hold the top portion of the pump/AFC dome. Then lift the top off the pump, replace the single spring, and re-install.



I would not want to try a 4000 + RPM spring in there,,, that's were I think you got some sand .....

This mod should take you right up to 3000 RPM. Remember you can control this with high idle screw tweaking as well. You would however, want to return your high idle screw to it's approx. stock position when you do this mod.

I also think that it would be prudent to consider 3300 RPM as the upper end safe margin for stock valve springs. Nascar Mark has gone upwards of 3600 RPM + and had no problems, but for me that is too close to the edge in terms of valve float and possible damage.



This mod along with idea's and prototype AFC cone mods are some fairly new stuff for us in terms of us trying them. I suppose that it may have been done by some in R&D years ago. But we seem to be trying "new" stuff (to us anyway) that will push our trucks a bit further.



Bob.

 

[therabbittree]

hehe sand huh. . man hehe any how i have a 300hp marine cummins sititng on my garge floor that was a ve engine i paln on redoing it with my p7100 so at least i have some spares i do nee a extra rod though any one have one?. . it had a pun rod bearing . . i have to see if the crank can be cut... any how Jim leonard what "Gov screw " are you turning?. . im interested . . do you mean the wot throttle set screw/stop on the throttle lever?

any how im interested in the springs

thanks

Deo

\x/ hillfolk!

 

[DBF]

I'm really interested in this mod.



At the last dyno event, I had higher torque than a bunch of the 2-gens, but lower peak rwhp since they develop theirs at a higher rpm. I'd like to run up a little higher in rpm, then bomb a little more.



DBF

 

[BushWakr - RIP]

Here's a link to a picture in one of my picture galleries... it shows the screw in question. .



https://www.turbodieselregister.com/user_gallery/displayimage.php?&photoid=2998&width=2



Bob.

 

[JLEONARD]

Deo,

Yes it was the wot throttle screw on the linkage.

JAY

 

[roadhawg]

Govenor spring

Hey guys



I picked up A spring for the VE pump in A VW jetta.

The part # is 1464613611



Cost was $2. 50



I dont know if its going to work, or when I can put it in.



Happy bombing!!!

 

[BushWakr - RIP]

I bleieve that part number is different. As for the cost

I'm surprised to be honest.

I read another user/tester tried this and he paid $40 +- USD for his.



Pretty sure that number is incorrect though... . let me dig some more. .



Bob.

 

[roadhawg]

That part# is not the 3000rpm spring.

Its the 4800~5200rpm! :--)

 

[JLEONARD]

Someone earlier said thiat spring attaches differently... . but for $2. 50 it's worth finding out for sure.

Let us know.

 

[HFletcher]

gov spring

Count me in, Bob!! Thanks, Henry

 

[roadhawg]

Diss-information

Please excuse previous post, as it can and will lead you astray. I pulled the top off of my injection pump and discovered that the spring previously posted is incorrect. IT WILL NOT FIT OUR TRUCKS!! After having examined the workings of the linkage, associated with the govenor spring, I do believe that I have found a modification that will yeild a small increase in rpm however I will not post it until I test it. I have to go put everthing back togather. I hope nobody wasted $ buying this spring and I apoligize if I lead you astray.

Bob count me interested in your govener spring mod!

 

[HFletcher]

gov springs

Well Gents, I've got what I hope is the right scoop on the evasive 3000/3200 gov springs for the VE pump. I just purchased three springs (two for me and one for fellow 1st genner Thierry). The tech couldn't give me exact rpm specifications for the spring, but could tell me application information - they are used on equipment with 3000 to 3600 full load rpm. He said they would accomplish my purpose. Bosch part number is 1-464-650-366. Price $13. 50 each.



For your further info, despite the fact all my pump adjustments are max'd out, when I stomp the throttle, she immed climbs to 25-30 pounds of boost but, when she hits about 2400 rpm you can see the boost fall off to about 18 psi, which she'll hold upto who knows what rpm (I don't take her past 3200). Above figures are approx.



My conclusion is if you want to pull full throttle throughout the rpm range, you must change the gov springs, in addition to doing the obvious external pump tweaks. Good luck to all, Henry

 

[therabbittree]

i assume the springs are different tension i wonder if they are harde or softer then the stock ie if they need to be harder to fight the centrifical force of the govenor weights to rev higher or if the need to be softer to rev high etc. . any idea. . also if the 5200 rpm spring attaches differently then i woner if you could swith the attachment points to 5200 rpm styles. . ie if the spring attaches to a lever then swap the levers etc... . or modify the spring or lever of the cumins to fit etc... also were do you guys buy these springs?. a bosch pump shop etc or cummins dealer etc??

just some ideas

later

Deo

 

[BushWakr - RIP]

Well there has been some interesting developements on this topic in one of the other threads.

A new member, dzlpwr, has jumped into the fray with what looks to me to be some pretty good logic.

Now, there are even more unanswered questions, or maybe misunderstood answers as a result.



On a related issue, my truck seems to be a fair bit different than what you fella's are posting... .

On my truck the top end RPM is a solid 3000 RPM. Now, when I go WOT no matter were I am in the RPM range, or gear, I do not see a sign of defuel until about 2750 RPM. At that point I can definitely say. . "oh ya, she's falling off... " with a bit less pull up to 3000.

Is the spring you found and bought, the same part number in my post on this topic?? BTW it was also posted as such on DTR, and that is the number I used when making my inquiries on this.



bob.

 

[HFletcher]

Bob, yes it is the same part number you posted, and I, too, could not discover the rpm specs on it - only applications for it which ranged from 3000 to 3600 full load rpms. By the way, what is DTR and how do I access it? Did a search last nite and couldn't find it. Thanks, Henry

 

[JLEONARD]

http://www.dodge-diesel.org/

 

[JLEONARD]

I asked US Diesel Parts to quote the Bosch 3000 rpm gov spring number referred to above. 1-464-650-366 This is their reply... ...



Thank you for the inquiry. This part is $13. 50 plus shipping. It usually ships 5-7 days after order placement.

Thank you for visiting www.usdieselparts.com. If we can assist you further, in any way, please email me at -- email address removed -- or call us at 1-800-823-4444. You can order on our secure page at https://secure.usdieselparts.com/secure.cfm.

Thanks,

Nick



Jay

 

[DBF]

US Diesel Parts

Tx, Jay



They don't have them in stock currently, but will get some in quickly. They said it would be about 10 days to get here, including the UPS Ground time.



Too dang cold to work outside this week anyway.



DBF